Lots of opinions about this on this forum.
Personally, I use an angle grinder, don't see how spending $800. or more could really make that much difference, except in lowering my bank account.
Blade balancers are a different story, MagnaMatic is THE one to have.

Funny, I used a grinder for years and got by, but my blades weren't perfect. Then I got a blade sharpener and it's better but still no picnic to get them done.

What I have never done is balance blades, other than using common sense when sharpening and taking off roughly the same amount of metal. Yet for some reason I've never had vibration problems or had to replace a spindle, ever, in 12 years.

I bought a fairly new mower used recently and its blades were badly unbalanced. I sharpened them up and they were better. Why am I getting so lucky with blades?

I may be wrong, but I am with you guys about using a grinder and a nail.

Advertising is all about convincing you need their product. The more people buy it and talk about it then you got to contend with constant advertisement and also peer pressure (I got it so it must be good so why don't you buy it so you can be cool like me).

I am amazed at people who buy expensive t-shirts,basketball shoes,etc with a company name or logo on it but you could buy the same product without the logo for a lot cheaper.

A company gets free advertisement and charge you extra to advertise for them when you buy their product. There sure are a lot of insecure people that need those logos on their clothes to feel like they are with the popular people.

I'm a gear-head and would love to use a blade grinder for my mulching blades, but the cost difference for a blade grinder vs. an angle grinder is maybe $750. I can't justify the additional expense and will continue to use a angle grinder.